Infectious bronchitis virus (IBV) is a contagious pathogen in fowl that results in economic loss in the poultry industry. In this study, the amino acids sequences of three structural proteins M, N, and S1 for five Iranian IBV isolated during 1998-2011 have been analyzed. Conserved and variable regions, hydrophobic characteristics and identity matrix were determined after alignment by Bioedit ve...

The current outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)in China threatened humankind worldwide. The coronaviruses contains the largest RNA genome among all other known RNA viruses, therefore the disease etiology can be understood by analyzing the genome sequence of SARS-CoV-2. In this study, we used an ab-intio based computational tool VMir to scan the complete geno...

Bovine viral diarrhoea virus (BVDV) is an important pathogen of dairy cattle. In this study, bulk milk samples representing a total of 4105 milking cows, from 18 dairy cattle herds in the suburb of Mashhad- Iran, were tested for presence of BVDV by the use of a nested reverse transcription polymerase chain reaction (Nested RT- PCR) assay. Non of the cows in the herds had been vaccinated against...

Background: Recently, some new viruses have been identified for their association with hepatitis which Torque Teno Mini Virus being among them. The aim of this study was to determine the frequency of Torque Teno Mini Virus in healthy individuals and hepatitis B and C patients in Isfahan, Iran. Materials and Methods: One hundred serum samples of healthy individuals from Isfahan Blood Transfusi...

parechoviruses form one of the nine genera in the picornaviridae family, and include two human pathogens: human parechovirus type1 and 2 (hpev1 and hpev2). the genome of picornaviruses encodes a single polyprotein, which undergoes a cleavage cascade performed by virus encoded proteases to give the final virus proteins. the primary cleavage occurs by 2a protein and this step is critical for vira...

background and objectives: to determine the potential circulation of avian influenza viruses among different captive bird species, molecular surveillance was conducted at tehran zoo, saiee park and pardisan park of tehran, iran. these places are at risk for spread and transmission of influenza virus because of bird species diversity and close contact of birds with humans. materials & methods: d...

the rate of cervical cancer in asians is deferent, based on the risk factors affecting and the rate of papiloma virus infection among females. cervical cancer is one of the important cancers between iranian women. in the present study the rate of cervical neoplasia was detected in isfahan and some risk factors affecting the incidence of cervical cancer was analyzed. the human papiloma virus inf...

a begomovirus, tentatively named tobacco leaf curl japan virus-jpu (tblcjv-jpu), was isolated from lonicera japonica (honeysuckle) plants grown in utsunomiya showing veinal chlorosis symptoms. the tblcjv-jpu genome with 2,761 nt showed a highest identity with tblcjv-jp3 and was also close to tblcjv and as well to tblcjv-jp2. the overall nt identity with tblcjv-jp3 amounted to 92.94%, while the ...

successful clearance of hepatitis b virus (hbv) is a promising event in which host's immune system will attempt to get rid of the virus. the immunological events of hbsag seroclearance have attracted great attention in both natural history investigations and therapeutic trials. recent genome-wide association studies (gwas) has confirmed polymorphisms in the human leukocyte antigen (hla)-dp locu...